Flush-tank elbow.



H. DE L. Mb'IsE.

FLUSH TANK ELBOW.

APPLIOA'IION FILED DEC. 5, 1910.

1,037, 1 65, Patented Aug. 27, 1912.

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IVITNESSLS; INVfNTOR. a). a a w X/WWJQA ATTORNEY.

COLUMBIA PLANOORAPH C0,. WASHINGTON, D. C.

ilhlTTED STATES. PATENT OFFICE HARMON DE LEON 1VI6ISE, F $UMTER, SOUTHCAROLINA.

FLUSH-TANK ELBOW.

T 0 all whom it may concern:

Be it known that I, HAnMoN DE LEQN Miller, a citizen of the UnitedStates, reslding at Sumter, in the county of Sumter and State of SouthCarolina, have invented certain new and useful Improvements in Flush-Tank Elbows; and I do hereby declare the following to be a full,clear, and exact description of the invention, suclras will enableothers skilled in the art to which it appertains to make and use thesame, re terence being had to the accompanying drawings, and to theletters and figures of reference named thereon, which form a part ofthis application.

My invention relates to improvements in flushing apparatus such ascommonly used in connection with sewer systems, said tank being providedwith a siphon for the purpose of discharging a quantity of water1ntermittently from the tank into the sewer for cleansing same, andconsists of means for easily removing all the apparatus normallypositioned in the tank in a line with the sewer, and also the upwardprojecting end of the discharge leg of the siphon so as to permit ofeasily cleaning or inspecting the sewer.

Figure 1 is a view in elevation, partly in section, of a flush-tankembodying my in vention. Fig. 2 is a top view, with the siphon arrangedat a slightly difi'erent angle from that shown in Fig. 1.

The same letters of reference denote the same parts wherever they areshown.

A, denotes a tank of the usual construction provided with the manhole R,the lamphole S and the vent T. Placed in the tank in any suitableposition is a bell M supported over the intaking limb O of the usual Ushaped siphon. This siphon extends downwardly from within the bell andreturns upwardly, the short leg E joining the removable elbow member Fat G. This downwardly projecting portion or neck G extends below theinvert H of the sewer C. Above G is the upwardly projecting lip N withinthe elbow member F. The removable member F carrying with it the parts Urand N may be rotatably mounted upon the short leg of the siphon E and isprovided with a collar designed to cause the short leg of the siphon Eto register with G and N, these parts constituting the top of the shortleg of the siphon and being in alinement therewith. The purpose ofmounting the Specification of Letters Patent.

Application filed December 5, 191i).

Patented Aug. 27, 1912.

Serial No. 595,568.

handle P. Thus unobstructed access from the tank may be had to thesewer. Heretofore, no means has been available for this purpose, whichleft an unobstructed space in line of the sewer from within the tank, ofthe full measure of the interior diameter of the sewer.

In order to prevent the long leg 0 and bell M of the siphon fromobstructing access to the sewer, the siphon is positioned at an anglewith the line of the sewer, so that a. line passing through the centerof the sewer would bisect at right angles or thereabout, a line passingthrough the center of the two legs of the siphon. A right angle need notbe exactly preserved, but this may be variable to any extent notinconsistent with preserving the space within the tank unobstructed inline with the sewer through the tank. Fig. 9. shows one suitablearrangement, with the legs of the siphon slightly out of the right angleline. The bottom of the tank L will be at or below the level of theinvert H of the sewer so that nearly all of the tank will be emptiedwhen F is removed.

In operation, when the liquid in the tank reaches a height greater thanthe column in the outlet side of the siphon formed by the leg C andsections G and N taken together, the siphon is brought into operation,and the liquid in the tank will be discharged into the sewer. If it isdesired to inspect the sewer, the liquid supply is now shut off and theremovable elbow F displaced. Any liquid now remaining will run off tothe level of H. Access is now obtained to the sewer to the full diameterthereof, and root formations or other obstructions which occupy theinside diameter of the sewer, may be freely extracted into the tank, asthe opening is wholly unobstructed.

Heretofore, means for inspecting or cleaning a sewer at thefiush-tank-end has been afforded by providing a man-hole into which theliquid from the flush tank discharges into which man-hole the sewercommunicates, and by means of this access is provided to the sewer. Thisadditional expense the sewer and is immovably so positioned,

is in the way, and forms a serious obstacle when extracting obstructionsfrom the sewer.

While any suitable means may be used for admitting liquid to the tank, Iprefer to employ an air jet Q to conduct mingled air and water under thebell by means of the pipe B. Here the air and water separate,

the water filling the tank, and the air, filling I the trap formed bythe bell M and upper 5 part of the siphon O. The air is in excess 1quantity, and consequently, the seal is always preserved until the waterreaches the flushing height. This method of supply is fully disclosed inLetters Patent #965,531, granted to me, and is the preferred means ofsupplying liquid in connection with this improved tank.

Having thus described my invention, I claim: V

The combination of a flush tank having an outlet in the bottom thereof,and an outlet for a discharge pipe in the side adjacent to the bottom, adischarge siphon having a limb connected to the first mentioned outlet.and its discharge limb arranged to termina te adjacent to the bottombelow said outlet for the discharge pipe, and an elbow for connectingsaid pipe and discharge limb together, said elbow having its siphonconnecting portion provided with a neck, so that the removal of theelbow will permit unobstructed access to the discharge pipe.

In testimony whereof I hereunto afiix my signature in the presence oftwo witnesses.

v HARMON DE LEON MC )ISE.

Witnesses:

H. R. VAN DEVENTER, E. M. HALL,

Copies of this patent inay be obtained tor five cents'each, byaddressing the Commissioner of ratents.

" Washington, D. G.

